3D Audio Navigation - Feasibility and Requirements for Older Adults

Audio Augmented Reality: A Systematic Review of Technologies, Applications, and Future Research Directions

“…The remaining 12 systems involved room acoustics modeling, but most of them did not provide their implementation details. Some works mentioned that they modeled some artificial reverberation [102,103,57,81,58,78,104]. Artificial reverberation simulates sound wave propagation phenomena in an environment such as reflection and diffusion, which can create the feeling of being in an indoor environment.…”

“…Although generic or similar HRTFs can work well for many users, some studies have shown that personalized HRTFs demonstrate significantly better results, especially if users demonstrate a high sensitivity of auditory localization or if their anatomical structures are far from average [135][136][137]. Among the AAR systems that have been reviewed, one work [104] measured HRTFs for some users and used these individual HRTFs to render binaural audio for these users.…”

“…Spatialization of virtual sound sources can assist with prompt localization of targets, in particular when the targets are outside the user's FoV. Some researchers have used spatialized auditory beacons to provide coarse directional guidance [26,63,80], whereas more work aimed to direct the user to specific objects or landmarks [88,98,105,145,30,79,61,62,146,65,92,51,78,31,73,27,37,104,147,54]. Some experiments have demonstrated adequate localization accuracy when directed to an object or position by spatialized virtual sound sources [30,78,26,52,73,63,37,104].…”

“…Some researchers have used spatialized auditory beacons to provide coarse directional guidance [26,63,80], whereas more work aimed to direct the user to specific objects or landmarks [88,98,105,145,30,79,61,62,146,65,92,51,78,31,73,27,37,104,147,54]. Some experiments have demonstrated adequate localization accuracy when directed to an object or position by spatialized virtual sound sources [30,78,26,52,73,63,37,104]. These experiments demonstrated a promising and intuitive use of AAR technology for navigation and also established the foundation for other applications, such as augmented environmental perception and telepresence applications.…”